Biology (Osmosis)

- Osmosis, diffusion

What is the liquid that the solute is dissolved in called?

solvent

What is diffusion?

Particles are constantly moving, due to this they collide with each other.

Diffusion is the tendency of particles to move from an area of higher concentration to an area of lower concentration.

What does equilibrium mean?

When there is an equal concentration of particles in some area

What is a concentration gradient?

It is when the cells move from an area of high concentration to an area of low concentration

What is passive transport?

When cells move along a concentration gradient, no energy is used by the cell to accomplish this movement

What are 2 types of atoms that are able to move through the cell membrane rapidly?

O2 and CO2

What is Osmosis?

it is the movement of water molecule through a permeable membrane along a water content ration gradient

type of diffusion

movement of water molecules from an area of high water concentration to a low water concentration area

What are the different types of solutions cells can be found in?

Hypertonic, hypotonic, and isotonic solutions.

What is a hypertonic solution and what happens to a cell in it?

The solution has a solute concentration higher than the cell in that solution

water moves out of the cell and into the surrounding solution, because of the water concentration gradient, the water doesn’t come back

this is known as net movement

Ultimately, the cell will shrink in size

What is a hypotonic solution and what happens in it?

is a solution which has a lower solute concentration than the cell in the solution

water moves into the cell from the surrounding solution

Because of the net movement, the water doesn’t go out and the cell swells in size

What is isotonic solution? And what happens to a cell in it?

equal concentration of solute with that cell that is in it.

No concentration gradient, so no net movement

Cell sizes stays the same